Intraocular Pressure Accuracy and Variability of the Barraquer Tonometer
Not Applicable
- Conditions
- Elevated Intraocular Pressure
- Registration Number
- NCT00409669
- Lead Sponsor
- Barnes Retina Institute
- Brief Summary
To determine if the Barraquer tonometer provides an accurate and reliable measurement of intraocular pressure. The Barraquer tonometer is a device used to safely and painlessly measure intraocular pressure.
- Detailed Description
Intraocular pressure will be checked using four different methods of tonometry. These four methods will include Tonopen, Goldmann applanation tonometry, Schiotz tonometry, and Barraquer tonometer. The data will then be compared to determine the reliability and accuracy of the Barraquer tonometer.
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 300
Inclusion Criteria
- All patients of Barnes Retina Institute who are scheduled to undergo vitreoretinal surgery.
- All patients scheduled for routine eye examination at the Washington University Eye Clinic or Barnes Jewish Eye Clinic.
- All ages (patients seen at these locations are adult patients >18 years of age).
Exclusion Criteria
- Any patient who is seen in the outpatient clinics for an urgent or emergency ophthalmological issue.
- Any patient who has a contraindication to routine, noninvasive methods of tonometry and/or pachymetry (ie corneal ulcer).
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- SINGLE_GROUP
- Primary Outcome Measures
Name Time Method Central corneal thickness as measured by pachymetry at time of measurement Intraocular pressure as measured by Schiotz tonometer at time of measurement Tonopen at time of measurement Barraquer tonometer at time of measurement and Perkins tonometer at time of measurement
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
Washington University School of Medicine and Barnes Jewish Hospital
🇺🇸St. Louis, Missouri, United States